Why do I have yellow teeth and how to fix it?

At Medident we know that a bright, white smile is important to many of our patients. However, it is common to face the problem of yellow teeth, an aesthetic concern that can affect self-confidence. If you’ve been asking yourself “why are my teeth yellow” or “how can I fix yellow teeth”, this article is for you. We’re going to explain the causes of yellow teeth and the treatment options available, including how to whiten yellow teeth effectively and safely.

Top causes of yellow teeth

If you think your teeth are yellow, the first step is to understand why this may be happening. Here are some of the main reasons:

Food and drink: Impact on the colour of your teeth

Some drinks, such as coffee, tea or red wine, may be to blame for your yellow teeth. These drinks contain pigments that adhere to tooth enamel and cause staining. The same goes for certain brightly coloured foods.

Smoking habits and their effect on teeth

If you smoke, it is likely that this habit is affecting the colour of your teeth. Smoking not only damages your overall health, but also leaves deep stains on your teeth.

Poor dental hygiene: A key factor

A poor or poorly conducted dental hygiene routine can lead to plaque and tartar build-up, which in turn causes discolouration of your teeth. Regular brushing and flossing is essential to prevent your teeth from turning yellow.

Genetic factors and ageing

Some people have naturally yellower teeth, and as you get older, your teeth change colour. This is because the enamel wears away over time, revealing darker dentine.

Health conditions and medications

Certain health conditions and medications, especially those containing tetracycline, can change the colour of your teeth. Treatments such as chemotherapy and radiation can also have a major impact on the colour of your teeth.

Prevention and daily care to keep teeth white

Preventing yellow teeth and performing small routines to keep your teeth white is always better than having to perform whitening treatments afterwards. Some of these tips can help you do just that:

Proper brushing and flossing techniques

A good brushing is much more than just running a toothbrush over your teeth. Here’s how to do it properly:

  • Use a soft-bristled brush and make gentle circular movements to clean effectively without damaging the enamel.
  • Brush for at least two minutes, twice a day, making sure to clean all surfaces of each tooth.
  • Flossing is essential to remove plaque and food debris between teeth where the toothbrush cannot reach. Floss at least once a day.

Recommended dental hygiene products

Incorporate products into your routines that strengthen your teeth and help keep them white:

  • Fluoride toothpastes to help strengthen enamel and prevent cavities.
  • Antibacterial mouthwashes to reduce plaque and tartar.
  • Whitening toothpastes to remove surface stains. But use them sparingly to avoid abrasion of enamel.

Healthy foods and habits for your teeth

What you eat and drink has a big impact on the colour of your teeth:

  • Limit foods and drinks that stain teeth, such as coffee, tea, red wine and carbonated beverages.
  • Include natural, crunchy foods such as apples and carrots in your diet, which help to clean your teeth naturally.
  • Drink water after consuming pigmented foods or drinks to minimise their impact on your teeth.
  • Quitting smoking will not only improve your overall health, but also prevent stained teeth.

When to go to the dentist: Looking for a permanent solution

Taking care of your teeth at home is essential, but at our clinic we insist that professional care is always a plus for dental health. In addition, if you are looking for a solution for yellow teeth, here are the details:

Signs that you need professional dental care.

Some warning signs that may alert you that it’s time to visit the dentist are:

  • If, despite your best hygiene efforts at home, your teeth are still yellow.
  • If you notice uneven discolouration or stains that do not disappear with brushing.
  • If you experience tooth sensitivity when eating hot or cold foods, which could indicate worn enamel.
  • If you have yellow teeth due to medication or a medical condition.

How your dentist can help you get your smile back: Professional treatments

Dentists have different tools to treat and improve the colour of your teeth and give you back a perfect smile:

In-office teeth whitening

In-office teeth whitening is a fast and very effective procedure to whiten yellow teeth. We use stronger whitening agents than those available in over-the-counter products, and the results are visible immediately after treatment.

Dental Veneers

Dental veneers are a wonderful option for transforming your smile. Not only do they whiten teeth, but they can also correct problems such as uneven or damaged teeth. Custom-made for each patient, veneers are bonded to the front of the teeth, offering a long-lasting and highly aesthetic solution.

The importance of regular visits to the dentist

Maintaining a healthy, beautiful smile goes beyond immediate treatments, it involves an ongoing commitment to dental care at home. In addition, regular visits to the dentist are essential not only to treat specific problems such as yellow teeth, but also to maintain the overall health of your mouth and avoid conditions that can be very complex and very expensive in the long term.

Post-treatment maintenance and tips for ongoing care

After receiving treatments such as teeth whitening or dental veneers, it is essential to follow a maintenance plan to maintain the results. Here are a few tips:

  • Follow a strict oral hygiene routine, brushing twice a day and flossing daily.
  • Avoid or limit foods and drinks that can stain your teeth, such as coffee, tea, red wine and carbonated beverages.
  • If you are a smoker, consider quitting to avoid future staining and other oral health problems.
  • See your dentist regularly for professional cleanings and check-ups. This not only helps keep your teeth white, but also allows you to detect and treat any emerging problems early.
  • Follow your dentist’s specific recommendations for the care of specific treatments, such as veneers.

Remember, caring for your smile is an ongoing process.


If you are looking for solutions for yellow teeth or simply want a regular check-up, our team of professionals is here to help you. Don’t wait for problems to get worse. A timely visit can be the key to solving a dental problem quickly and effectively. For more information, personalised advice or to schedule your next appointment, visit Medident or contact us directly. We are ready to serve you and make sure your smile reflects the best of you.



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José Manuel Martín
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Esther Moya Moyano
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